Changed from package to command. Removed bindata dependency from gene…

…rated go files by embedding the unpacking code in the generated function.

CONTRIBUTORS

@@ -0,0 +1,10 @@
+# This is the list of people who can contribute (or have contributed) to this
+# project. This includes code, documentation, testing, content creation and 
+# bugfixes.
+#
+# Names should be added to this file like so:
+#     Name [<email address>]
+#
+# Please keep the list sorted.
+
+Jim Teeuwen <jimteeuwen at gmail dot com>

LICENSE

@@ -0,0 +1,3 @@
+This work is subject to the CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
+license. Its contents can be found at:
+http://creativecommons.org/publicdomain/zero/1.0

Makefile

@@ -0,0 +1,15 @@
+# This work is subject to the CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
+# license. Its contents can be found at:
+# http://creativecommons.org/publicdomain/zero/1.0
+
+include $(GOROOT)/src/Make.inc
+
+TARG = bindata
+GOFILES = main.go gowriter.go bindata.go
+
+all:
+	$(GC) -o $(TARG).6 $(GOFILES)
+	$(LD) -s -o $(TARG) $(TARG).6
+
+clean:
+	rm -rf *.o *.a *.[568vq] [568vq].out *.cgo1.go *.cgo2.c _cgo_defun.c _cgo_gotypes.go _cgo_export.* *.so *.exe $(TARG)

README

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+================================================================================
+ bindata
+================================================================================
+
+This tool converts any file into managable Go source code. Useful for embedding
+binary data into a go program. The file data is gzip compressed before being
+converted to a raw byte slice.
+
+If gofmt is available on the system, bindata will invoke it to format the
+generated go file.
+
+================================================================================
+ DEPENDENCIES
+================================================================================
+
+ n/a
+
+================================================================================
+ USAGE
+================================================================================
+
+    $ goinstall github.com/jteeuwen/go-bindata
+
+ The simplest invocation is to pass it only the input file name.
+ The output file and code settings are inferred from this automatically.
+
+    $ bindata -i testdata/gophercolor.png
+    [w] No output file specified. Using 'testdata/gophercolor.png.go'.
+    [w] No package name specified. Using 'main'.
+    [w] No function name specified. Using 'gophercolor_png'.
+    [i] Done.
+
+ This creates the "testdata/gophercolor.png.go" file which has a package
+ declaration with name 'main' and one function named 'gophercolor_png'.
+ It looks like this:
+
+     func gophercolor_png() ([]byte, os.Error) {
+          var gz *gzip.Decompressor
+          var err os.Error
+          if gz, err = gzip.NewReader(bytes.NewBuffer([]byte{
+              ...
+          })); err != nil {
+              return nil, err
+          }
+
+          var b bytes.Buffer
+          io.Copy(&b, gz)
+          gz.Close()
+          return b.Bytes(), nil
+     }
+
+ You can now simply include the new .go file in your program and call
+ gophercolor_png() to get the uncompressed image data.
+
+ Invoke the program with the -h flag for more options.
+

bindata.go

@@ -0,0 +1,74 @@
+// This work is subject to the CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
+// license. Its contents can be found at:
+// http://creativecommons.org/publicdomain/zero/1.0/
+
+package main
+
+import (
+	"path"
+	"fmt"
+	"exec"
+	"io"
+	"os"
+	"compress/gzip"
+)
+
+// If gofmt exists on the system, run it over the target file to 
+// fix up the generated code. This is not necessary, just a convenience.
+func gofmt(file string) (err os.Error) {
+	var prog string
+	if prog = os.Getenv("GOBIN"); len(prog) == 0 {
+		return
+	}
+
+	prog = path.Join(prog, "gofmt")
+	cmd := exec.Command(prog, "-w", file)
+	return cmd.Run()
+}
+
+// Translate the input file.
+// input -> gzip -> gowriter -> output.
+func translate(input, output, pkgname, funcname string) (err os.Error) {
+	var fs, fd *os.File
+	var gz *gzip.Compressor
+
+	if fs, err = os.Open(input); err != nil {
+		return
+	}
+
+	defer fs.Close()
+
+	if fd, err = os.Create(output); err != nil {
+		return
+	}
+
+	defer fd.Close()
+
+	fmt.Fprintf(fd, `// auto generated from '%s'.
+
+package %s
+import ( "io"; "os"; "bytes"; "compress/gzip" )
+
+func %s() ([]byte, os.Error) {
+var gz *gzip.Decompressor
+var err os.Error
+if gz, err = gzip.NewReader(bytes.NewBuffer([]byte{`, input, pkgname, funcname)
+
+	if gz, err = gzip.NewWriter(&GoWriter{Writer: fd}); err != nil {
+		return
+	}
+
+	io.Copy(gz, fs)
+	gz.Close()
+
+	fmt.Fprint(fd, `
+})); err != nil {
+	return nil, err
+}
+
+var b bytes.Buffer
+io.Copy(&b, gz)
+gz.Close()
+return b.Bytes(), nil}`)
+	return
+}

gowriter.go

@@ -0,0 +1,34 @@
+// This work is subject to the CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
+// license. Its contents can be found at:
+// http://creativecommons.org/publicdomain/zero/1.0/
+
+package main
+
+import (
+	"fmt"
+	"io"
+	"os"
+)
+
+type GoWriter struct {
+	io.Writer
+	c int
+}
+
+func (this *GoWriter) Write(p []byte) (n int, err os.Error) {
+	if len(p) == 0 {
+		return
+	}
+
+	for n = range p {
+		if this.c%12 == 0 {
+			this.Writer.Write([]byte{'\n'})
+			this.c = 0
+		}
+
+		fmt.Fprintf(this.Writer, "0x%02x,", p[n])
+		this.c++
+	}
+
+	return
+}

main.go

@@ -0,0 +1,93 @@
+// Copyright (c) 2010, Jim Teeuwen. All rights reserved.
+// This code is subject to a 1-clause BSD license.
+// See the LICENSE file for its contents.
+
+package main
+
+import (
+	"os"
+	"flag"
+	"fmt"
+	"path"
+	"strings"
+	"runtime"
+)
+
+const (
+	APP_NAME    = "bindata"
+	APP_VERSION = "0.2"
+)
+
+func main() {
+	in := flag.String("i", "", "Path to the input file.")
+	out := flag.String("o", "", "Optional path to the output file.")
+	pkgname := flag.String("p", "", "Optional name of the package to generate.")
+	funcname := flag.String("f", "", "Optional name of the function to generate.")
+	version := flag.Bool("v", false, "Display version information.")
+
+	flag.Parse()
+
+	if *version {
+		fmt.Fprintf(os.Stdout, "%s v%s (Go runtime %s)\n",
+			APP_NAME, APP_VERSION, runtime.Version())
+		return
+	}
+
+	if len(*in) == 0 {
+		fmt.Fprintln(os.Stderr, "[e] No input file specified.")
+		os.Exit(1)
+	}
+
+	if len(*out) == 0 {
+		// Ensure we create our own output filename that does not already exist.
+		dir, file := path.Split(*in)
+
+		*out = path.Join(dir, file) + ".go"
+		if _, err := os.Lstat(*out); err == nil {
+			// File already exists. Pad name with a sequential number until we
+			// find a name that is available.
+			count := 0
+			for {
+				f := path.Join(dir, fmt.Sprintf("%s.%d.go", file, count))
+				if _, err := os.Lstat(f); err != nil {
+					*out = f
+					break
+				}
+
+				count++
+			}
+		}
+
+		fmt.Fprintf(os.Stderr, "[w] No output file specified. Using '%s'.\n", *out)
+	}
+
+	if len(*pkgname) == 0 {
+		fmt.Fprintln(os.Stderr, "[w] No package name specified. Using 'main'.")
+		*pkgname = "main"
+	}
+
+	if len(*funcname) == 0 {
+		_, file := path.Split(*in)
+		file = strings.ToLower(file)
+		file = strings.Replace(file, " ", "_", -1)
+		file = strings.Replace(file, ".", "_", -1)
+		file = strings.Replace(file, "-", "_", -1)
+		fmt.Fprintf(os.Stderr, "[w] No function name specified. Using '%s'.\n", file)
+		*funcname = file
+	}
+
+	// Read the input file, transform it into a gzip compressed data stream and
+	// write it out as a go source file.
+	if err := translate(*in, *out, *pkgname, *funcname); err != nil {
+		fmt.Fprintf(os.Stderr, "[e] %s\n", err)
+		return
+	}
+
+	// If gofmt exists on the system, use it to format the generated source file.
+	if err := gofmt(*out); err != nil {
+		fmt.Fprintf(os.Stderr, "[e] %s\n", err)
+		os.Exit(1)
+	}
+
+	fmt.Fprintln(os.Stdout, "[i] Done.")
+}